Internal rotary spider.



UNITED STATES PATENT OFFICE.

BENJAMIN FRANKLIN HINIRER, OF TAFT, CALIFORNIA,

INTERNAL ROTARY SPIDER.

Application' tiled September 4, 1817,

4To all whom t may concern Y Be it known that I, BnNJAMiN FRANKLIN HINIKBR, a citizen of the United States, siding at Taft, in the county of Kern, State of California, have invented certain new and useful Improvements in Internal Rotary Spiders; and I do declare the following to be a ill, clear, and exact description of the same, reference being had tothe accompany ing drawings, and to the characters of reterenee marked thereon, which foi-1n a puit of this application,

This inventionrelntes to improvements in well drillingl machinery and equipment, and iarticuiarly to the z'otery trible, drivingr ushing and pipe holding slip construction.

In the now commonly used types ot' Well drilling machinery, the driving bushing and the pipe retaining slips are independent members and it is necessary each time they are used to manually insert or displace thv-mi This takes a great deal of time and trouble and the operation of such members is also more or less unsatisfactory. The object of my invention islo produce a combined table, slip and driving bushing structure which is left in position on the tableeml earch e|e ment thereof can easily and quickly he called into immediate use es required, without the necessity of manually handling the same or removing them from the table.-

A further object of the invention to produce a simple ,and inexpensive device and yet one which will be exceedingly ei'- fective for the purposes for which ity is de- Signed.. f l

These objects I accomplish hy means of such structure and relative arrangement of p parts as will fully appear by u perusal oi the following specification and claims.

In the drawings similar characters of reference indicate corresponding parts in the several views.

Figure 1 is a top plan view o my improved equipment,

Fig. 2 is a transverse vertical section through the same, showing the drill stem in position in the driving bushing7 and a, small portion of the pipe suspended below the same.

Referring now more particularly to the Specification of Letters Patent `when such" pleins Patented J uly 30, 191B.

serial No. 139,474.

vided with the usuel cent1-:il aperture 2, of`

desired shape and size, A sleeve o extends a slight distance below the table and is pro vided on nach side with a pair oi slotted guides 1 movable in which are springf pinssed pins 5, Iurnahle on which are spools (i, which wel, as guides ttor the pipeJas the same is lowered into the well. These guide spools V will mronnnmhate pipes of different sizes by reason oit their sliding roiotion Within the quilles 4. and :it the some time they wiil always he held in constant Contact with the pipo hy means ol' the swings 5u. In the top of the plate l are provided guide grooves or slots 9, movable through which are rollers 10 in plates 1l.. The inner faces of the plates 1i are beveled as at 1.2 and project downwardly in 1o the aperture 2. T he lower ends of the projections 413 are pro vided with square outer surfaces which lit directiy against the sides of the aperture 2 when the plates il are in their mosthackwnrd position` as shown :it 14. The under taci-s of the plates Ll nre out out so that nro in the backward position ils indicated above there is :i shoulder 15 on the under side of @zich plate which shoulders :ingle slightly away from the sides of the aperture :3, for a purpose ns will pres enty appear.

The slips 1H are mounted for movement down the inclined surfaces 12 and nre normally held in their uppermost position by means of the springs 17. Such slips 16 are provided with central grooves 18, arranged to close in against the pipe in a manner as will presently appear. The driving bushing 1f) if; composed of two parts bolted together hy holts 2o whereby the same may be set on the drill stein S. It is also provided with a slidnhle wedge shaped insert 22, inten posed between the drill stem 8 and one of the pnl-is oi said bushing 19, in order to compensate for :my wen'r between the two. This bushing if) has tapering sides which fit between the inc-lined sides of'the slips 16 when the su me :1re in their backward positio and hence nre held stationary with respect to the rotating trible 1, so as to drive the drill stem with the rotation of such table. When thev drill stem is hoisted, however, the shoulder 7 of the pipe 7 en ages the lower end of the bushing 19 and li ts it clear from .the slips 16. This brings the pipe 7 centered between the slips 16. Thelever 24 is then moved to theA position shown by dotted lines in Fig. 1. This action pulls on the slip rods 26 connected between the turnable liar 25 and the plates 11, to which bar 25 the lever 24 is connected, as shown. Thus both of the plates 11 and incidentally the slips 16 simultaneously advance toward the axis'of the table. As this is done the shoulders vl5 ride downwardly along the edges of the aperture 2. This action brings the sides of the grooves 18 directly into contact with the pipe 7. Then as the pipe 7 is allowed to gravitate Slightly downward, the slips 16 tend to move downwardly against the springs 17. Due to the inclined sides of the slips lf3 bearing against the inclined walls 12, such slips are wedged securely against thc pipe, locking the same against move-, ment. Thereupon'the drill stem may be removed for any desired purpose,

When it is desired to again lower the pipe and place the drill stem in driving relation with the table, the pipe'' is then slightly lifted. This lifting first withdraws the shoulders 1.3 upwardly cnt of the aperture 2. The pressure ot' the springs 23 movesl the plates backwardly and draws the slips 16 away from the pipe and the springs 17 not a. ainst such slips to cause them to' entirely ree the pipe. Thereupon the pipe is lowered and the driving bushing 1l) moves back into place between the slips 1G, and-this action continues until such bushing is lirmly wedged between the slips. y

The. upward movement of the slips 16 lis limited by Ineens of over-hanging plates 27 mounted on pins 28 disposed on 'the plates 11,

The. drive bushing being beveled on its outer edges'is firmly seated at all times, thus eliminating the knock and hammer now common to square bushings.l The slips, having the beveled backs es shown, are thus rigid to side motion and hence a bit inserted between the two front or square fwces may be installed or removed by rotating' the table.

From the foregoing description it will readily yappeal' that I haveprovided a conilainedllriving bushingr and, pipe lorkingir slip construction which may be permanent ly iuouutedon the rotating table, und which is able to erform all of the necessary liinrf` tions wilhout necessitating the removal of any of the parts froln the table. The ndvantuges ol' his will he readily apparent lo any one skilled in llie art.

. From' the Jt'oreg,'oing3; description it will be readily seen that I have produced such a device as substantially fulhls the object of the invention as set forth herein.

While this specification sets forth in de tail the present and preferred construction of the device, still in practice such deviations from such detail may be resorted to as do not form u de. arturo from the spirit of the invention, es efined by the appended claims. y

Having thus described my invention what I claim as new and useful and desire .to Secure by Letters Patent is I. A device of the character comprising the combination with an apertured rotating table and a drill stem `end pipe projecting therethrough, of n driving bushing and pipe clamps carried by the table, the bushing being normally held in engagement with the table by the clamps when the drill is in operation, and means whereby when the drill stem is lifted the bushing will he freed from the clamps, and means for then movi-ng the clamps into engagement with the pipe.'

' 2. .A device of the character described comprising the combination with an apertured rotating table and a. drillstem and pipe projecting therethrough, of. a. driving bushing and ipe clamps carried by the table, the bushing being normally held in en lgagement with the tebleby the clamps when the drill is in operatipn, and means whereby when the drill 'jstem is lifted the bushing will ;be freed from the clamps, and means for then moving thewlemps in to engagement with the pipe,` such .letter means including a lever andfrods inter osed between the lever and clamps where y when the lever is operated the clm s will be moved .toward the axis of t e tab e, and springs to push the clamps bac l when the lever is released. i.

3. The combinationA with a rotating drill table, of a means for Iclam ing pipe stationary with respect to the te le Such means comprising clamps movable radially of the exis oithetalile, lever ycontrolled rods for drawing the clamps together andsprings 'to push them apart. 4 1

4. The combination wi lalile having oppositely disposed clamps, a

drill stein and pipe movable between the clamps, a drivingr bushing on the drill stern.'

ngageahle by the clumps to'fplace` the drill stein in driving relation with the tebleyand means on the pipcengagcable with the busiling to raise itxiirec of 4the clumps 'whenthe pipe is raised.

` The combinationwith a'rotary drill lalih having oppositely disposed plllnips, af drill stein and pipe movable between the clamps, a driving bhshing on the drill stem th a rotary 1,273,8ue B engageable by the clamps to place the drill In festimony whereof I aix my signe-iure stem in driving relation with the table, and in presence of two wienesses.

means on the pipe engageable with the bush- BENJAMIN FRANKLIN HINIKER.

ing to raise it; free of the clamps when the Witnesses: 5 pipe is raised, and means for then moving F. L. JORDAN,

the clamps into engagement with the pipe. JAMES S. SAvIElzs. 

